Good on a phone: 209 sites

Slide tiles, double numbers, lose an hour to one more go

Grant Sanderson's maths lessons, with the visuals inline

Build your own weather out of ten ambient sliders

One long essay a day, on the questions without answers

Browse by genre, mood, decade or who played on it

Type your address, watch it drift 750 million years

Machines taken apart in animation, layer by layer

Two anonymous models answer, you pick the winner

One space image a day, explained by a working astronomer

A guidebook to the places no guidebook mentions

Filter by genre, format and location, then simply listen

The etymology and history of first names, worldwide

Maths taught as intuition first, notation afterwards

Weather radar, counting the birds that migrate overnight

Three rules are all a flock of birds needs

An 1847 geometry book where colour replaces the labels

The chatbot that made everyone else build a chatbot

Click a grid of squares and it becomes a melody

A world map where every pin is a field recording

Anthropic's assistant, strongest on long documents

Parody of viral listicles, taken far past reason

The specific hum of a café, minus the queue and the cost

Sixteen words, four secret groups, four mistakes allowed

Four rules, and cells that build spaceships anyway

Watch one nest from first egg to first flight

What happens between typing a command and seeing output

The scrappy image generator that got there first

Crude stick figures, consistently indefensible punchlines

A weekly note listing five datasets you can have

Two dozen ambience layers, mixed on one dark screen

A graphing calculator that keeps up with your typing

Same six panels every time, different conversation

A catalogue of very nearly every record ever pressed

Flood the whole board with one colour in thirty moves

Twelve hundred nature recordings, kept free by a charity

Thousands of public cameras, pointed at everywhere at once